Compare phones
| Global Score | |
| 91.8 | 87.7 |
| Basic Information | |
| Samsung | Samsung |
| Android 11 | Android 10 |
| 2021-01-29 | 2020-09-11 |
| 5.97 x 2.80 x 0.31 inches | 6.45 x 3.00 x 0.37 inches |
| 6.03 ounces | 7.51 ounces |
| Gray, Phantom pink, Violet and White | Black and White |
| Aluminum and Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 722.00 | -- |
| Display / Screen | |
| 6.2 inches | 6.7 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| Dynamic AMOLED | Super AMOLED Plus |
| 424 pixels per inch | 385 pixels per inch |
| 1300 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 9.2 | 8 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Qualcomm Snapdragon 730 SM7150-AA chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Kryo 470, 64-bit, 8 nm (Octa-Core 2200 MHz) processor |
| 8 GB RAM | 6 GB RAM |
| Adreno 660 GPU | Adreno 618 GPU |
| 9.63 | 9.27 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 14.14 |
| Camera | |
| 12.00 MP + 10.00 MP | 64.00 MP + 32.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.57 inches (1/1.76") sensor | 0.57 inches (1/1.76") sensor |
| 7680 x 4320 (24 fps) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | -- |
| 10.78 | 11.88 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 10.7 | 6.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 7000mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 5.92 | 8.32 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Samsung Galaxy S21 is just a bit better than Samsung Galaxy M51, getting a global score of 91.8 against 87.7. These phones include Android OS (operating system), but Samsung Galaxy S21 has the newer 11 version and Samsung Galaxy M51 has Android 10. Samsung Galaxy S21 is a somewhat lighter and thinner phone than the Samsung Galaxy M51, even when both were released with only 5 months difference.
The Galaxy S21 has a bit superior CPU than Galaxy M51, and although they both have 8 CPU cores, the Galaxy S21 also has 2 GB more RAM memory. Samsung Galaxy S21 has a better looking display than Samsung Galaxy M51, because although it has a little smaller screen, it also counts with a bit higher resolution of 1080 x 2400 pixels and a bit higher screen pixels density.
The Galaxy M51 takes much better photographs and videos than Galaxy S21, and although they both have the same 3840x2160 (4K) video quality, a same size camera aperture and a 0.57 inches sensor, the Galaxy M51 also has better video frame rate and a camera in the back with a lot better resolution. The Samsung Galaxy M51 has a very superior memory capacity for applications, games, photos and videos than Galaxy S21, and although they both have the same internal memory, the Samsung Galaxy M51 also has an external memory card slot that holds a maximum of 512 GB.
Samsung Galaxy M51 features a really longer battery life than Galaxy S21, because it has 7000mAh of battery capacity against 4000mAh.
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